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Where to ground sub amp

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Old 07 Mar 2018, 02:37 pm
KalebSikora's Avatar
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Default Where to ground sub amp

I have installed a subwoofer and an amp in the trunk and I'm having a hard time finding a bolt for my ground wire. Is there any pre-made hole to the bare metal like under the front seat or will I have to drill a new hole? If I do have to drill, how and where would I go about doing that?

Last edited by KalebSikora; 07 Mar 2018 at 02:39 pm.
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Old 07 Mar 2018, 02:54 pm
Handy_Cruiser's Avatar
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Default Re: Where to ground sub amp

The silver cargo rings in the back screw into the chassis on the bottom rings and into metal brackets that are bolted to the chassis on the side rings. These should provide a pretty good ground. And one of the large Torx-head seat belt bolts should provide an excellent ground.
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Old 07 Mar 2018, 03:04 pm
KalebSikora's Avatar
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Default Re: Where to ground sub amp

Oh sweet I'll have to check that out. I noticed those actually but wasn't too sure on how to remove the trim. Thanks!
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Old 07 Mar 2018, 05:02 pm
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Default Re: Where to ground sub amp

What did you decide on for a system?
BIG RED '01 LE 170K
Vision Cross 16x7 Rims, 205/55/16 , Painted Calipers, Spoiler, CAI, Triple Air Horns coming soon

Sound System
Pioneer DEH-64BT head unit, Zapco Z400-C4SL competition amplifier, 2 10" MTX subwoofers, Rockford Fosgate P1T-S Tweets, Rockford Fosgate 6x8"s , Rockford Fosgate 6.5"'s, AudioControl 24XS crossover

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Old 16 Mar 2018, 02:03 pm
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Default Re: Where to ground sub amp

I used to compete in SPL car audio competition on a national level

Competitor Stats: Aaron Bird

Competitor Stats: Team Darkside

(I got out of it in 2008)... my biggest build was 2 18" dual voice coil Inhuman hand built subs on 10,000 watts in a 30 cubic foot sub box built in my 89 Caravan running 3 runs each power and ground of 2/0 welding cable to aluminum buss bars..... I also used to install for Best Buy Electronics here in Calgary... I say all this to back up my knowledge and not to show off.

The best ground you can get is direct to the battery. And make sure the ground cable is at least the same gauge as the power cable...or better use a bigger gauge for the ground. It lowers the resistance in the circuit and will extend the life of your amp. Also make sure your connections are soldered where possible.

As far as the ground, to the battery and bigger than the power cable...the 2 best pieces of advice I can offer to anyone.
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Old 16 Mar 2018, 02:47 pm
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Default Re: Where to ground sub amp

If any ground is used for an Amplifier other then the direct battery you must make sure the the *grounds are good between the frame and body and engine and frame and engine and body . Don't assume that even a single or grouping of factory harness grounding wires has the best continuity. Most times the addition of *added braided ground straps are needed to insure best grounding of all electrical components on most every platform when adding upgraded stereo components like amplifiers or even other electrical projects.

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